Pipe machine



Jane 26, 192s.

T. M. LILLEBERG PIPE MACHINE Filed Feb. 21, 1927 5 sheets-sheet 1 (lll June 26, 1928.

T. M. LILLEBERG l PIPE MACHINE s sheets-sheet 3 Filed Feb. 21, 1927 a [il der( fo 2".'

T. M. LlLLEBERG' June 26, 1928.

PIPE MACHINE Filed Feb. 21,l 1927 `5 Sheets-Sheet 4 1 June 26, 1928. 1,675,182

T. M. LILLEBERG y PIP MACHINE Filed Feb. 21, 1927 5 sheets-sheet 5 i, Patented June 26, 1928.

UNIT-ED STATESA 11,615,182 PATENT OFFICE.

TIDEMAN `M. LILLIsfBERG, OF CHICAGO. ILLINOIS, ASSIGNOR T THE NYE TOOL & MACHINE WORKS, 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PIPEl MACHINE.

- Application nled February 21, `1927'. Serial Np. 169,982.

One of my objects is to provide improvements in pipe machines adapted to thread or cut oi the end of a pipe, or both, whereby -the pipe may be readily introduced into the '5 desired position in the machine and'which is advantageous particularly where long pipes are to be operated on.

Another object is to provide novel, simple and positively operating mechanism' for centering and clamping the pipe in such a machine. 'i I y Another object, and this particularly in a machine adapted to thread a pipe, is to -provide improvements therein to the end that the length ot the machine, and consequently its size, maybe reduced, while maintaining the desired spread between the rotating head i-n which the pipe is secured, and the device by'which the threads are produced on the pipe.

cutting machine a novel and simple mechanism for removing the burr, if any, produced on the inner surface of the pipe in the cutting operation.

vAnother object is to provide in apipe cutting machine, improved means for engaging the end of the pipe during the burr-removing operation; andother objects as will be manifest from the' following description.

Referring to the accompanying drawlngs Figure 1 is a view in front elevation of a pipe threading and cutting machine constructed4 in4 accordance -with my invention, certain parts being shown in dotted lines. Figu'reQ is a broken lplan view` of the machine of Fig. 1. Fig. Bis an end view of the machine of the preceding igures show.- ing certain partsbroken. away and others To provide mechanism for cutting olf thefl Another object is to provide in a pipe lsectioned, this view being taken from theI IJin the machine, and in the process of." an end thereof being cut of. Figure 5 is a'broken section taken at the line' 5 5 on Fig. 4 and viewed in the direction of the arrows, this View showing the parts of the machine in the position they occupy after the end of the pipe has been cut oi, the burr-removing device being shown by dotted lines in inoperative position and by full lines in the position it assumes duringthe operation of re moving the burr. Figure 6 is a brokenl view 35 in elevation of thedie-supporting member, showing a die positioned therein and a pipe i in the process of being threaded. Figure 7 is a view in longitudinal .section of the dieholding and cutter-equipped portionof the machine, the die being shown positioned for threading a pipe, with they pipe being threaded therein, and the section for the remalning parts being taken at the line 7 on Fig. 5 andl viewed in the direction of the 75 arrow.l Figure 8 is a broken, enlarged sec' tion taken at the linev 8 on Fig. 2 and viewed in the direction of the arrow, the chuck being removed anda pipe to be threaded shown by dotted lines in position in the machine;

- and Figure 9, a section taken. at the line 9--9 on Fig. 8 and viewed in the direction of the arrows. l vThe machine shown comprises a frame structureA 10 at which the machine is sup'- 85 ported, this frame being surmounted by a housing structure 11 provided at its upper surface with spaced parallel guide rods 12 located at the front and rear margins of the housing.

`vRising rom the housing, is a journal bearing-13 containing between its ends a circumferential hollow extension 14. Rotatably mounted in the journal 13 is a tubular head 15 `provided at one end with a circum- -95 ferential outwardly extending. flange 16 overlapping'one end of the. journal bearing 13 and between its ends .with a gear 17 located in the vhousing 14, the end of the head 15 provided with the flange 16 being ,provided 10ow radially about the longitudinal axis of the,u head and pivoted thereto at 22 to adapt themto berocked in radial slots 23 in .the side wall of the head, these lingers being p rovided with rounded Iextensions 24 extending 4at an angle to the main -portions of these fingers and located in an annular groove 25 provided about the innerside of a ring member 26 having threaded connection at internal threads 27 thereon with the externally threaded portion 28 of the head 15, the ring 26 being provided with a hand wheel'portion 29 'by Awhich it maybe rotated on the head.4 By providing engagement between the fingers 21 and the ring member 26 as stated, these ngers are rocked in one direction or the other depending upon the direction of rotation of the member 26, to simultaneously move the inner ends of these fingers relative to each other, rotation of the member 26 in clockwise direction'in Fig. 9 operating to4 move the inner ends of the lingers 21 inwardly toward the longitudinal axis of the head and reverse rotation of this Vmember moving them in theopposite direction.

In the particular machine illustrated which is shown as driven by avsel-contained power device, such as the reversible electric ,motor represented at 30, this power device together with speed changing mechanism for driving the head at different speeds forward and in .reverse direction as desired, are located within the housing 11, the speed changing mechanismyvhich may be of any suitable construction being represented at 31 and operatively connected atits drive shaft 32 with the armature shaft 33 of the motor by means of the gears 34 and 35. The driven shaft of this speed changing mechanism and represented atl 36 is provided with a gear 37 located within the housing 14 and meshing with an intermediate gear 38 also located in this housing and meshing with the gear 17. The speed-change levers are represented at y 39 and 40.

The mechanism for cutting oi the end of the pipe to be threaded and threading the same, comprises a head 41 mounted on the guide'rods 12and confined thereon to be slidable lengthwise of the machine.. This headl is formed of a plate portion 42 extending crosswise of the machine and having upper and lower spaced parallel flange portions 43 and 44 extending in a direction toward the head 15 and containing grooves 45 and 46 forming guide-ways to receive a threading die. such as that represented at 47 and which latter is slidable in these grooves from a position in which it extends wholly to one side of a pipe in the machine, as shown in Fig. 5, to a position in rwhich its pipe threading elements48 yextend. in alignment with 'an opening 49 in the plate 43 and with the pipe to .be threaded (Figs. 6 and 7).

The mechanism now being described-also comprises a frame 50 formed of upper and lower parallel rods '51 and 52 which are' lower bosses 5,5 and 56 formed on the head 4.1, and cross members 57 and 5,8 rigidly connected with the rods 50 and 52. The cross member 57 is formed with an enlargement 59 carrying upper and lower spaced-apart ears 60 and 61 at one end thereot` and sets` of horizontally spaced apart ears 62 and 63 lo'- yslidable in upper bossesA 53 and 54. and in I cated above and below the axis ofthe head l 15 andK in which rollers 64 andJ65 are journalled to form anti-friction abutments against. .whichthe side `of the pipe to be cut tends at the side of the pipe opposite that engaged by the rollers 64 and 65, and in line with Vthese rollers transversely of the machine. Thc slide 66 is also provided with a membeigshownas a plate 69, which extends crosswise of the machine and between the thereon'a serrated cutter disk 68 which eX- cutter 68 and the head 15 and is provided with a substantially V-shaped recess 70 forming a iaw at which this plate is adapted to bear against the pipe opposite the side thereof engaged by the rollers 64 and 65.

Means are provided for adjusting the slide 66 toward and away from the rollers 64 and 65, under the control of the operator, these means in the construction shown comprising a feed-screw 71 having threaded engagement with the cross member 58 at a threaded opening 72 therein with itsinner end swiveled in the slide 66, a pin 73 in the slide 66 and projecting into an annular groove 74 in the reduced unthreaded end 75 of the feed-screw` 71, permitting rotation of the feed-screw relative to the slide, while com-v pelling lengthwise movement of the latter responsive to the corresponding movement ofthe feed-screw 71.

The mechanism also comprises means for removing the burr produced on the inner edge of the pipe by the cutting operation, these means comprising a holder 76 for a reaming tool 77 this holder being shown as in the form of a lever presenting lamgularly disposed arms 78 and 79, the arm 78 carrying thel tool 77 and being pivotally connected at 80 -to the ears 6() and 61 to cause the tool 77 to be positioned in a plane midway between the axes of the rollers 64 and 65, the other arm 79 being provided with a handle portionv 81 by which the operator may swing the 'holder 76 into and out of a position for engaging the tool 77 with the pipe, the

holder being shown by dotted lines in outp wardly swung position in Fig and by full -ent desired positions, by means 4,of lever mechanism comprising a link 82fpivotally connected at one endto a stationary portion .of the machine, as represented at 83 and pivotally connected at itsopposite end with the rearend of a lever 84, asrepresented at 85, the lever 84, which extends generally crosswise of the machine and above the guide-ways 12, being pivotally connected between its ends 'to the base portion 86 ofthe head 41, as represented-at 87, it being understood that the operator, by grasping the forward end lof the lever84, may shift the head 41 in any desired position along the guideway. a

The operation of the machine is as follows: The operator introduces 'the end of the pipe 18'tdo be operated on, into the head 15 the outwardly flared portion 19 of the head aiding in thus introducing the pipe yinto the head, and slides it between the guide fingers 21 and into and through the Vchuck 15a, the guide fingers operating to prevent the end 'of the .pipe from striking the chuck mechanism, tliese fingers being preferably tightened upon the pipe after thus positioning thellatter, by screwing up the actuating ring 26., In practice the operator in removing the pipe from the machine after it has b een cut and threaded, would operate the ring 26 only to such an extent as to cause the fingers 21 to release their grip on the pipe so that in utting anotherl pipe into the' machine these ngers would be in such posi-` tion as'to properly guide thepipe through the chuck.

The operator lhaving conditioned" the motor and transmission mechanism for rotating the pipe in clockwise direction in Fig. 9 at relativelyhigh speed shifts the head 41 toward the head 15 to causetlie end'of the pipe to be operated on to extend into the space between the rollers 64 and 65 and' the 'cutter 68. He then turns up the feed screw 71 to feed the cutter against the side of the rotating pipe and gradually feeds in thecutter, until it has cut through the entire side wall ofthe pipe. 'He continues to feed the slide 66 inwardly until thejaw portion 70 thereof bears against the side of the pipe c and thereupon swings the holder 76 from the dotted position shown in Fig. 5 to the full line positionl shown in lthis figure to effect the removal ofthe burr produced by the cutting operation .described on the. inner edge portion of the pipe by the action of the shargened lower edge of the tool 7 7.

-Uponcompleting these operations he retracts the slide 66 and shifts the head 41 t-o the rightin Fig. 1 to a position beyond this end of the pipe and then shifts the threading die 47 from the position shown in Fig. 5 to the position shown in Fig.' 6- in which position its threading elements 48 extend concentric with the end of the pipe. He then conditions the transmission mechanism to rotate the pipe in clockwisev direction in Fig. 9 at relatively slow speed and then shifts the head 41 to 'the left in'Fig. 'l to a position in whichl the end of the pipe extends into the threading die, the operator verses the motor for unscrewing the pipe from the threading die. One of the principal features of my improved machine is that of mountingthe cut- -ter and its feedingr means, together,.with

the abutment for the opposite side of the pipe-,I on a member which4 is free to shift crosswise of the pipe without disturbing the relative positions of the cutter and abutment. This feature is of great advantage inasmuch as thepipe at the end thereof pro- -47 is of the non-opening type as shown, re-

truding from the Chuck does not run true,

but has a wobbling motion and this' motion is compensate/d for by permitting the cutter and abutment to shift with the pipe thereby ensuring the uniform cutting of the pipe and ioo avoiding undue stresses. on this mechanism.

Furthermore, byv mounting the reaming tool on thiscrosswise shiftable member this tool andthe abutment cooperating therewith, as also the jaw member 70 may shift `laterally with the pip ensuring the uniform trimming of the inner edge -of the pipe wit-hout undue stress on the mechanism, the IJaw 70 operating to steady the pipe inc this burrremoving operation.

It will be noted from'the foregoing that bylocatin'g the gear transmission mechanismin a plane below the heads 15 and 41 and providing for the drive of the head 15 from the transmission mechanism as shown and described, the chuck mechanism 15a may extend relatively closeto the adjacent end of the machine which permits the machlne be made of relatively short length, with consequent economy and still afford the desired degree of adjustment of the cutting and threading mechanism .in a direction wise of the machine to and from the pipe-rotating head.

length- '1 tion, the die may shift laterally with the pipe where the latter does not run true, withy the manifest advantage.

While l have illustrated and described my improvements as embodied in a particiilai'weoiistriiction of machine, Ido not wish to be understood as intending to limit my inveiition thereto, as the 'same may be vari-,

oiisly modified and altered without departing from the spirit of my invention.

`What I claim as new,l and desire` to secure Y by Letters Patent, is:

1. In a pipe-cutting machiiie,.the combination of means for rotating the pipe, and pipe-ciitting means comprising a support formed of vertically spaced guides located above and below, respectively, theaxis of a pipe mounted in said first-named means, a member formed of relativelymovable sec tions one of said sections comprising upper andflovver parallel rods slidably engaging said guides and cross members connecting said rods together, said section being movable crosswise of the pipe in the cutting operation, the other of said sections being mounted on said frame for movement lengthwise of the latter, a cutter element on one of said sections at one side of the pipe, an abutment on the other of said sections at the opposite side of the pipe, and means co acting with both sections for moving said abutment and cutter toward each other.

2. ln a pipe-cutting machine. the combi nation of means for rotating the pipe. and pipe-cutting meams comprising a support formed of vertically spaced guides located above and below,respectivel v, the axis of. a pipe mounted in said tirst-named means, a member formed of relatively movable sections one of said sections comprising upper and lower parallel rods slidably engaging said guides and cross members connecting said rods together, said sections being movoperation, the other of said sections being mounted on said frame for lengthwise of the latter, a cutter element on one of said sections at one side of the pipe, an abutment on the other of said sections at the opposite side of the pipe, and means coacting with both sections for moving said abutment and cutter toward each other. said member being free toshift bodily with the pipe in a direction crosswise of the latter in the cutting operation.

3. In a pipe-cutting machine, the combination of means for rotating the pipe, and pipe-cutting means comprising a support formed of vertically spaced guides 'located above and below, respectively, the axis of a pipe mounted in said first-named means, a. member formed of relatively' movable vsections one of said sections comprising upper and lower parallely rodsslidably engaging said guides and cross members connecting said rods together, said sections being movable erosswise of the pipe in`the cutting voperation, the other. of said sections'being mountedon said frame for movement lengthwise of the latter; a cutter element on onel of said sections at one side of the pipe and having sliding engagement with certain of said guides, an abutment on the other of said sections at the opposite side ot the pipe.v and means coacting with both sections tor moving said vabutment and cutter vtoward each other, said member being free to shift able crossvvise of the pipe in the' cutting movement l 

